WO2012035737A1 - 睡眠判定装置 - Google Patents

睡眠判定装置 Download PDF

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Publication number
WO2012035737A1
WO2012035737A1 PCT/JP2011/005096 JP2011005096W WO2012035737A1 WO 2012035737 A1 WO2012035737 A1 WO 2012035737A1 JP 2011005096 W JP2011005096 W JP 2011005096W WO 2012035737 A1 WO2012035737 A1 WO 2012035737A1
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Prior art keywords
determination
signal
biological information
amplitude
time
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PCT/JP2011/005096
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English (en)
French (fr)
Japanese (ja)
Inventor
樋江井　武彦
重森　和久
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ダイキン工業株式会社
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Priority to CN201180040924.9A priority Critical patent/CN103079460B/zh
Publication of WO2012035737A1 publication Critical patent/WO2012035737A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4812—Detecting sleep stages or cycles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb

Definitions

  • the present invention relates to a sleep determination device for determining a sleep state of a sleeper.
  • Patent Document 1 an apparatus for detecting a sleeper's entering and exiting a bed has been developed (see, for example, Patent Document 1).
  • variation of the air pressure resulting from a sleeper's motion is converted into an electric signal, and the body movement signal and the other biological information signal are separated from the electric signal. Then, with the input of the body motion signal as a trigger, the presence or absence of the input of the biological information signal is detected for a predetermined period after waiting for the predetermined period.
  • the input of the body movement signal is used as a determination trigger, for example, when a sleeping person enters the floor, the trigger cannot be detected, and there is a possibility that accurate determination cannot be performed.
  • the present invention has been made by paying attention to the above-described problem, and it is an object of the present invention to make it possible to accurately determine whether to enter a bed even when a sleeping person has entered the floor.
  • the first invention is: A biological signal detection unit (41) for detecting a biological information signal (S2) whose amplitude changes according to the sleeper's biological activity; A body motion signal detector (20, 33) for detecting a body motion signal (S1) whose amplitude changes according to the size of the body motion of the sleeper; A first entry determination condition that is established when the amplitude of the body movement signal (S1) continuously exceeds the body movement threshold (V1) for more than the entry body movement determination time (t1); and the biological information signal (S2 ) When the amplitude of) continuously exceeds the biometric information threshold (V2) for more than the biometric information determination time (t2), and when at least one of the second determination criteria is satisfied, It is a sleep determination apparatus provided with the determination part (44) which determines that the said sleeping person entered the floor.
  • the user has entered the floor when either one of the two entry determination conditions is satisfied. For example, when the body movement of the sleeping person at the time of entering the bed is relatively large, if the first entering judgment condition is satisfied, the entering of the sleeping person is detected. On the other hand, even if the sleeping person enters the floor together and the first entering judgment condition is not satisfied (that is, the body movement is relatively small), the second entering judgment condition is satisfied if the sleeping person is entering the floor. Then, the bedtime of the sleeping person is detected.
  • the determination unit (44) determines the bedtime of the bedridden when the amplitude of the biological information signal (S2) falls below the biological information threshold (V2), and the biological information signal (S2)
  • the state where the amplitude of the body motion signal (S1) is lower than the biological information threshold (V2) continues for more than the exit biological information determination time (t3), and the amplitude of the body motion signal (S1) immediately before the trigger is the body motion threshold ( V1) during the first floor leaving determination condition that is satisfied when the body moving determination time (t4) has continued for more than the time, and during the detection period (t5) after the trigger, the biological information
  • the determination condition of at least one of the second exit determination conditions that is satisfied when the integration time of the time when the amplitude of the signal (S2) is less than the biological information threshold (V2) is equal to or more than the integration determination time (t6) is When established, it is determined that the sleeper has gone out.
  • the determination unit (44) determines whether the bedridden gets out of the bed, triggered by the amplitude of the biological information signal (S2) being lower than the biological information threshold (V2). For example, in the detection period (t5) after the trigger, when the integrated time of the time when the amplitude of the biological information signal (S2) is lower than the biological information threshold (V2) is equal to or longer than the integrated determination time (t6) The second exit condition is established. This second getting-out determination condition can be satisfied even when the body movement is relatively small (that is, when the sleeping person gets out of bed).
  • the biological information signal (S2) is a signal indicating the sleep or heartbeat of the sleeper.
  • the determination of entering or exiting is performed using the sleeper's breathing or the amplitude of the heartbeat as a trigger.
  • the fourth invention is In the sleep determination device of the second invention,
  • the exiting biological information determination time (t3) and the exiting body movement determination time (t4) are each 2 minutes.
  • the exit biological information determination time (t3) and the exit body movement determination time (t4) are each set to 2 minutes, and determination of getting out is performed in a total of 4 minutes.
  • the detection period (t5) is 15 minutes
  • the integration determination time (t6) is 12 minutes.
  • the detection period (t5) is 15 minutes
  • the integration determination time (t6) is 12 minutes
  • the determination of getting out is performed in 15 minutes.
  • the entrance body movement determination time (t1) is 2 minutes
  • the entrance biological information determination time (t2) is 10 minutes.
  • the in-bed body movement determination time (t1) is 2 minutes and the in-vivo biological information determination time (t2) is 10 minutes.
  • the entry determination is completed in 10 minutes.
  • the first aspect of the present invention it is possible to accurately determine whether or not a sleeping person has entered the floor.
  • FIG. 1 is a diagram illustrating a schematic configuration of an entrance / exit determination apparatus according to the present embodiment.
  • FIG. 2 is a diagram for explaining a use state of the entrance / exit determination device.
  • FIG. 3 is a block diagram showing the configuration of the circuit unit in the present embodiment.
  • FIG. 4A is a timing chart for explaining the relationship between the body motion signal and the entering body motion judging time in the judgment of entering the floor, and FIG. 4B showing the relationship between the heartbeat signal and the entering biological information judging time.
  • FIG. 5 is a timing chart for explaining the relationship among the body motion signal, the heartbeat signal, the exit biological information determination time, and the exit body motion determination time in the determination of the first exit determination condition.
  • FIG. 4A is a timing chart for explaining the relationship between the body motion signal and the entering body motion judging time in the judgment of entering the floor
  • FIG. 4B showing the relationship between the heartbeat signal and the entering biological information judging time.
  • FIG. 5 is a timing chart for explaining the relationship among the
  • FIG. 6 is a timing chart for explaining the relationship among the body motion signal, the heartbeat signal, the detection period, and the integrated determination time in the determination of the second getting-off determination condition.
  • FIG. 7 is a flowchart for explaining an operation for determining whether a sleeping person enters the floor in the bed / departure determination apparatus.
  • FIG. 8 is a flowchart for explaining an operation (first exit determination operation) when determining whether or not the first exit determination condition is satisfied.
  • FIG. 9 is a flowchart illustrating an operation (second exit determination operation) when determining whether or not the second exit determination condition is satisfied.
  • FIG. 1 is a diagram for explaining a schematic configuration of an entrance / exit determination device (10) according to the present embodiment.
  • FIG. 2 is a figure explaining the use condition of the entrance / exit determination apparatus (10).
  • the entry / exit determination device (10) includes a pressure-sensitive unit (20) and a main unit (30).
  • the air conditioning system that uses the determination result of the entry / exit determination device (10) is not shown.
  • the pressure-sensitive unit (20) transmits body movements that occur from the sleeping person to the main unit (30).
  • the pressure sensitive unit (20) includes a pressure sensitive part (21) and a pressure transmission part (22).
  • the pressure sensitive part (21) is constituted by an elongated hollow tube having one end closed and the other end opened.
  • the pressure sensitive part (21) is installed in the bedding (6) such as a bed of the bedroom (5) (see FIG. 2).
  • the pressure transmission part (22) is comprised by the elongate hollow tube which both ends open.
  • the pressure transmission part (22) has a smaller diameter than the pressure sensitive part (21).
  • the pressure transmission unit (22) has one end connected to the opening (23) of the pressure sensing unit (21) and the other end connected to the main unit (30).
  • the main unit (30) includes a casing (31), a mounting portion (32), a pressure receiving portion (33), and a circuit unit (40) (the circuit unit (40) does not appear in FIGS. 1 and 2). ).
  • the casing (31) is formed in a flat box shape, and is installed, for example, on the floor in the bedroom (5).
  • the attachment portion (32) is formed on the side surface of the casing (31).
  • the attachment portion (32) has a substantially annular recess (32a) that is recessed inward, and a protrusion (32b) that protrudes outward from the recess (32a).
  • a through hole (32c) is formed in the convex portion (32b) in the axial direction so as to communicate the outside and the inside of the casing (31).
  • the other end of the pressure transmission part (22) is fitted on the convex part (32b).
  • the pressure receiving part (33) is built in the casing (31) so as to be located on the back side of the through hole (32c).
  • the pressure receiving part (33) is configured by a microphone, a pressure sensor, or the like.
  • the internal pressure of the pressure sensitive part (21) acts on the pressure receiving part (33) via the pressure transmitting part (22) and the through hole (32c).
  • the pressure receiving part (33) converts this internal pressure into an electrical signal and outputs it as a body movement signal (S1) to the circuit unit (40) in the main unit (30).
  • the amplitude of the body motion signal (S1) changes according to the size of the body motion of the sleeping person.
  • Both the pressure receiving part (33) and the pressure sensitive unit (20) constitute an example of the body motion signal detection part of the present invention.
  • FIG. 3 is a block diagram illustrating a configuration example of the circuit unit (40).
  • the circuit unit (40) includes a biological signal detection unit (41), a memory (42), a timer (43), and a determination unit (44), and is accommodated in the casing (31). .
  • the biological signal detection unit (41) detects the sleeper's heart rate and outputs the detection result (heart rate signal (S2)) to the determination unit (44).
  • the biological signal detection unit (41) modulates the body motion signal (S1) output from the pressure receiving unit (33) into a body motion signal in a predetermined frequency band.
  • the biological signal detection unit (41) extracts a signal in the heart rate frequency band from the modulated frequency band of the body motion signal, and derives a heart rate per minute.
  • the biological signal detection unit (41) outputs the derived heart rate as a heartbeat signal (S2) whose amplitude changes according to the sleeper's biological activity.
  • the heartbeat signal (S2) is an example of the biological information signal of the present invention.
  • the memory (42) is a memory for holding the body movement signal (S1) read during a certain period.
  • the memory (42) holds the body motion signal (S1) for the latest fixed period (exited living body information determination time (t3) described later).
  • the getting-out biometric information determination time (t3) is 2 minutes, and the memory (42) holds the number of body motion signals (S1) read in the 2 minutes.
  • the timer (43) includes first and second counters (43a, 43b), and each counter (43a, 43b) can perform a counting operation in parallel.
  • Each counter (43a, 43b) starts counting time according to the control of the determination unit (44), and outputs the count result to the determination unit (44).
  • the determination unit (44) determines whether the sleeping person enters the bedding (6) and gets out of the bedding (6).
  • the determination result is output as a determination signal (S3) to the outside of the circuit unit (40) (for example, a control device of an air conditioning system).
  • the determination unit (44) determines that the sleeping person has entered the floor when one of the following two determination conditions is satisfied.
  • the first judgment condition is “the amplitude of the body motion signal (S1) is the body motion threshold (V1), and the body motion judgment time (t1) is continuous for a predetermined time”. And exceeded. ”
  • the second determination condition is “the amplitude of the heartbeat signal (S2) is equal to the biological information threshold (V2) for a predetermined time (entry biological information determination time (t2))”. It has been exceeded.
  • FIG. 4A shows the relationship between the body motion signal (S1) and the entrance body motion determination time (t1) in the determination of entrance
  • FIG. 4B shows the heartbeat signal (S2) and the entrance biological information determination time ( 6 is a timing chart for explaining the relationship of t2).
  • the determination unit (44) uses the following two determination conditions (first and second output) as a trigger when the amplitude of the heartbeat signal (S2) falls below the biological information threshold (V2).
  • the first exit judgment condition is “the state where the amplitude of the heartbeat signal (S2) is below the biometric information threshold (V2) continues for the exit biometric information judgment time (t3) and the trigger The state where the amplitude of the body motion signal (S1) exceeds the body motion threshold (V1) has been continued for more than the exit body motion determination time (t4).
  • the second exit judgment condition is “the accumulated time of the time when the amplitude of the heartbeat signal (S2) falls below the biological information threshold (V2) during the detection period (t5) after the trigger is a predetermined accumulated time. It must be at least the determination time (t6).
  • FIG. 5 shows the relationship among the body motion signal (S1), heartbeat signal (S2), exit biological information determination time (t3), and exit body motion determination time (t4) in the determination of the first exit determination condition. It is a timing chart to explain.
  • FIG. 6 is a timing chart for explaining the relationship among the body motion signal (S1), the heartbeat signal (S2), the detection period (t5), and the integrated determination time (t6) in the determination of the second getting-out determination condition. is there.
  • the body movement determination time (t1) is 2 minutes
  • the biological information determination time (t2) is 10 minutes
  • the biological information determination time (t3) ) Is 2 minutes as described above
  • the floor movement determination time (t4) is 2 minutes
  • the detection period (t5) is 15 minutes
  • the integration determination time (t6) is 12 minutes.
  • FIG. 7 is a flowchart for explaining an operation of determining whether a sleeping person enters the floor in the bed / departure determining device (10).
  • the determination of whether or not the first entrance determination condition is satisfied steps ST01 to 07, hereinafter, the first entrance determination operation
  • the second entrance determination condition steps ST11 to ST17, hereinafter, second entry determination operation
  • an entry determination trigger is that the body movement signal (S1) exceeds the body movement threshold (V1) (see FIG. 4).
  • This trigger is detected in steps ST01 and ST02.
  • the determination unit (44) takes in the body movement signal (S1) output from the pressure receiving unit (33) in step ST01.
  • the determination unit (44) compares the amplitude of the body motion signal (S1) captured in step ST01 with the body motion threshold (V1). As a result of the comparison, if the amplitude of the body motion signal (S1) is equal to or greater than the body motion threshold (V1), the process proceeds to step ST03, and if not, the process returns to step ST01.
  • the determination unit (44) determines whether or not the amplitude of the body motion signal (S1) has continuously exceeded the body motion threshold (V1) and the body motion determination time (t1) when entering, that is, It is determined whether or not the first entry determination condition is satisfied. Specifically, in step ST03, the determination unit (44) resets the first counter (43a) of the timer (43) (sets the count value (T) to zero), and then sets the first counter (43a). Start counting. In step ST04, the determination unit (44) captures the body movement signal (S1). In step ST05, the determination unit (44) compares the amplitude of the body motion signal (S1) captured in step ST04 with the body motion threshold (V1).
  • the determination unit (44) proceeds to the process of step ST06, and otherwise, the process of step ST03 (timer Return to (43).
  • step ST06 the determination unit (44) compares the current count value (T) of the timer (43) (first counter (43a)) with the in-body movement determination time (t1). To do. As a result of the comparison, when the count value (T) is equal to or greater than the in-body movement determination time (t1), the determination unit (44) proceeds to the process of step ST07, and otherwise, the process of step ST04 ( Go to body motion signal (S1) capture. The process proceeds to step ST07 when the first entry determination condition is satisfied. In step ST07, the determination unit (44) outputs a determination signal (S3) indicating that the sleeper has entered the floor.
  • S3 determination signal
  • the entry determination is triggered when the heartbeat signal (S2) exceeds the biological information threshold (V2) (see FIG. 4).
  • This trigger is detected in steps ST11 and ST12.
  • the determination unit (44) takes in the heartbeat signal (S2) output from the biological signal detection unit (41).
  • the determination unit (44) compares the amplitude of the heartbeat signal (S2) captured in step ST11 with the biological information threshold (V2), and the amplitude of the heartbeat signal (S2) is greater than or equal to the biological information threshold (V2). In this case, the process proceeds to step ST13. Otherwise, the process returns to step ST11.
  • Steps ST13 to ST16 the determination unit (44) determines whether or not the amplitude of the heartbeat signal (S2) has continuously exceeded the biological information threshold value (V2) for a predetermined time (the entering biological information determination time (t2)). Then, it is determined whether or not the second entry determination condition is satisfied. Specifically, in step ST13, the determination unit (44) resets the second counter (43b) of the timer (43) (sets the count value (T) to zero), and then the second counter (43b) To start counting. And the determination part (44) takes in a heart rate signal (S2) in step ST14.
  • step ST15 the determination unit (44) compares the amplitude of the heartbeat signal (S2) captured in step ST14 with the biological information threshold (V2), and the amplitude of the heartbeat signal (S2) is greater than or equal to the biological information threshold (V2). In this case, the process proceeds to step ST16. Otherwise, the process returns to step ST13 (operation of the timer (43)).
  • step ST16 the determination unit (44) compares the current count value (T) of the timer (43) (second counter (43b)) with the in-vivo biological information determination time (t2). . As a result of the comparison, when the count value (T) is equal to or longer than the in-vivo information determination time (t2), the determination unit (44) proceeds to the process of step ST17, and otherwise, the process of step ST14 ( Proceed to heart rate signal (S2) capture. The process proceeds to step ST17 when the second entrance determination condition is satisfied. In step ST17, the determination unit (44) outputs a determination signal (S3) indicating that the sleeping person has entered the floor.
  • S3 determination signal
  • the entrance / exit determination device (10) two kinds of entrance determination operations are performed in parallel, and when it is determined that the user enters the floor by one of the methods, the sleeper enters the floor.
  • a determination signal (S3) indicating that the operation has been performed is output.
  • FIG. 8 is a flowchart illustrating an operation (first exit determination operation) when determining whether or not the first exit determination condition is satisfied.
  • FIG. 9 is a flowchart for explaining an operation (second exit determination operation) when determining whether or not the second exit determination condition is satisfied.
  • the determination unit (44) mainly operates according to the respective flowcharts.
  • the trigger is that the amplitude of the heartbeat signal (S2) falls below the biological information threshold (V2) (see FIG. 5), and the body motion before the trigger Judgment of the bedridden person is performed according to the amplitude of the signal (S1). Therefore, the entrance / exit judgment device (10) holds the body motion signal (S1) for the latest fixed period.
  • the determination unit (44) takes in the body motion signal (S1) output from the pressure receiving unit (33) at regular intervals, and stores the value in the memory (42) (steps ST31 to ST33). In this memory (42), the value of the body motion signal (S1) taken in the last two minutes (exit biological information determination time (t3)) is stored.
  • the determination unit (44) detects the trigger. First, in step ST21, the determination unit (44) takes in the heartbeat signal (S2) output from the biological signal detection unit (41). In step ST22, the determination unit (44) compares the amplitude of the heartbeat signal (S2) captured in step ST21 with the biological information threshold (V2), and the amplitude of the heartbeat signal (S2) is equal to or lower than the biological information threshold (V2). In this case, the process proceeds to step ST23. Otherwise, the process returns to step ST21.
  • Steps ST23 to ST28 the determination unit (44) determines whether or not the first getting out determination condition is satisfied. Specifically, in step ST23, the determination unit (44) resets the counter of the timer (43) (for example, the first counter (43a)), and then causes the first counter (43a) to start a counting operation. In step ST24, the determination unit (44) takes in the heartbeat signal (S2). In step ST25, the determination unit (44) compares the amplitude of the heartbeat signal (S2) with the biological information threshold (V2). If the amplitude of the heartbeat signal (S2) is equal to or smaller than the biological information threshold (V2), It progresses to the process of step ST26, and when that is not right, it returns to the process of step ST23.
  • the determination unit (44) determines whether or not the first getting out determination condition is satisfied. Specifically, in step ST23, the determination unit (44) resets the counter of the timer (43) (for example, the first counter (43a)), and then causes the first counter (43a) to start
  • step ST26 it is determined whether or not the time when the amplitude of the heartbeat signal (S2) is equal to or less than the biological information threshold (V2) is equal to or longer than the getting-out biological information determination time (t3). Specifically, in step ST26, the determination unit (44) compares the count value of the first counter (43a) with the exit biological information determination time (t3). As a result of the comparison, when the count value in the first counter (43a) is equal to or longer than the getting-out biometric information determination time (t3), the determination unit (44) proceeds to the process of step ST27. Return to the process.
  • step ST27 the determination unit (44) reads out the body motion signal (S1) at the latest getting-out biological information determination time (t3) from the memory (42), and proceeds to the process of step ST28.
  • step ST28 the determination unit (44) determines whether the time during which the amplitude of the body motion signal (S1) read from the memory (42) is equal to or greater than the body motion threshold (V1) is equal to or greater than the exit body motion determination time (t4). Determine whether or not. If the determination condition is satisfied in step ST28, the determination unit (44) proceeds to step ST29, and otherwise returns to step ST21. The process proceeds to step ST29 when the first exit determination condition is satisfied. In step ST29, the determination unit (44) outputs a determination signal (S3) indicating that the sleeping person has gone out.
  • the bedtime of the sleeping person is determined by using the trigger of the amplitude of the heartbeat signal (S2) as below the biological information threshold (V2) (see FIG. 6). reference).
  • This trigger is detected in steps ST40 and ST41.
  • the determination unit (44) takes in the heartbeat signal (S2) output from the biological signal detection unit (41) in step ST40.
  • the determination unit (44) compares the amplitude of the heartbeat signal (S2) captured in step ST40 with the biological information threshold (V2), and the amplitude of the heartbeat signal (S2) is equal to or lower than the biological information threshold (V2). In this case, the process proceeds to step ST42, and otherwise, the process returns to step ST40.
  • the determination unit (44) determines whether or not the second exit determination condition is satisfied. Specifically, in step ST42, the determination unit (44) resets the two counters (43a, 43b) of the timer (43), and then causes each counter (43a, 43b) to start a counting operation.
  • the first counter (43a) counts the detection period (the count value is T5)
  • the second counter (43b) is the amplitude of the heartbeat signal (S2) during the detection period (t5). Is counted for the accumulated time (the accumulated time is T6) when the time is less than the biological information threshold (V2).
  • step ST43 the determination unit (44) takes in the heartbeat signal (S2).
  • step ST44 the determination unit (44) compares the amplitude of the heartbeat signal (S2) with the biological information threshold value (V2). As a result of the comparison, if the amplitude of the heartbeat signal (S2) is equal to or smaller than the biological information threshold (V2), the determination unit (44) proceeds to the process of step ST45, and otherwise proceeds to the process of step ST46.
  • step ST45 the determination unit (44) increments T6 (integrated time, that is, the value of the second counter (43b)), and in step ST46, T5 (detection time, that is, the count value of the first counter (43a). Value).
  • step ST47 the determination unit (44) compares T5 with the detection period (t5) to determine whether the detection period has expired. If the detection period (t5) has not expired as a result of the determination, the determination unit (44) returns to step ST43, and if it has expired, the process proceeds to step ST48.
  • step ST48 the determination unit (44) compares the integration time (ie, T6) with the integration determination time (t6). If the determination condition is satisfied in step ST48, the determination unit (44) proceeds to step ST49, and otherwise returns to step ST40. The process proceeds to step ST49 when the second exit determination condition is satisfied. In step ST49, the determination unit (44) outputs a determination signal (S3) indicating that the sleeping person has gone out.
  • the bedtime determination of the sleeping person is performed using a trigger that the amplitude of the heartbeat signal (S2) (biological information signal) is lower than the biological information threshold (V2).
  • S2 heartbeat signal
  • V2 biological information threshold
  • the first getting out determination condition is satisfied, and thus the first getting out determining operation is performed, so that the sleeping person's getting out is detected.
  • the second getting out determination condition is satisfied, so that the second getting out determination operation is performed, so The person getting out is detected. Therefore, in this embodiment, even when a bedridden gets out of bed, it is possible to accurately determine to get out.
  • the first getting out determination condition is satisfied, and therefore the first getting out determining operation is performed.
  • the bedtime of the sleeping person is detected.
  • the sleeping person enters the bed together that is, when the body movement is relatively small
  • the second entry determination condition is satisfied, so that the second entry determination operation is performed, so The person getting out is detected. That is, even when a sleeping person enters the floor, it is possible to accurately determine the arrival.
  • the biological information signal (S2) is not limited to the heartbeat signal (S2).
  • a signal indicating the sleep of the sleeper may be used as the biological information signal.
  • the configurations of the body motion signal detection unit (20, 33) and the biological signal detection unit (41) are examples.
  • the apparatus may be configured to determine only entrance.
  • the present invention is useful as a sleep determination device for determining the sleep state of a sleeper.
  • Entry / exit determination device (sleep determination device) 20 pressure-sensitive unit 33 pressure-receiving unit 41 biological signal detection unit 44 determination unit

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PCT/JP2011/005096 2010-09-16 2011-09-09 睡眠判定装置 WO2012035737A1 (ja)

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CN109846466A (zh) * 2017-11-30 2019-06-07 八乐梦医用床有限公司 异常判定装置、电子设备及计算机可读存储介质

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